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laravel-priority-queue

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Priority Queues driver implementation for Laravel. Utilizing DB Driver.

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# ShipSaaS - Laravel Priority Queue Driver

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A simple Priority Queue Driver for your Laravel Applications to serve your priority messages and 
makes users happy 🔋.

With the famous Repository Pattern of Laravel, Priority Queue Driver is easily get injected into
Laravel's Lifecycle without any hassle/hurdle.

We can use built-in artisan command `php artisan queue:work` 😎.

## Supports
- Laravel 11 (supports by default)
- Laravel 10 (supports until Laravel drops the bug fixes at [August 6th, 2024](https://laravel.com/docs/11.x/releases))
- PHP 8.2 & 8.3
- Any database that Laravel supported.

## Architecture Diagram

![Seth Phat - Laravel Priority Queue](https://i.imgur.com/H8OEMhQ.png)

### Why Priority Queue Driver use Database?

- Everybody knows Database (MySQL, PgSQL, etc) 👀.
- Easy and simple to implement ❤️.
- Utilize the `ORDER BY` and `INDEX` for fast queue msgs pop process. Faster than any other stuff 🔥.
- Highest visibility (you can view the jobs and their data in DB) ⭐️.
- Highest flexibility (you can change the weight directly in DB to unblock important msgs) 💰.
- No extra tool involved. Just Laravel 🥰.

## Install Laravel Priority Queue

```bash
composer require shipsaas/laravel-priority-queue
```

### One-Time Setup

Export and run the migration (one-time). We don't load migration by default just in case you want to customize the migration schema 😎.

```bash
php artisan vendor:publish --tag=priority-queue-migrations
php artisan migrate
```

Open `config/queue.php` and add this to the `connections` array:

```php
'connections' => [
    // ... a lot of connections above
    // then our lovely guy here
    'database-priority' => [
        'driver' => 'database-priority',
        'connection' => 'mysql',
        'table' => 'priority_jobs',
        'queue' => 'default',
        'retry_after' => 90,
        'after_commit' => false, // or true, depends on your need
    ],
],
```

## Scale/Reliability Consideration

It is recommended to use a different database connection (eg `mysql_secondary`) to avoid the worker processes ramming your 
primary database.

## Usage

### The Job Weight

The default job weight is **500**.

You can define a hardcoded weight for your job by using the `$jobWeight` property.

```php
class SendEmail implements ShouldQueue
{
    public int $jobWeight = 500;
}
```

Or if you want to calculate the job weight on runtime, you can use the `UseJobPrioritization` trait:

```php
use ShipSaasPriorityQueue\Traits\UseJobPrioritization;

class SendEmail implements ShouldQueue
{
    use UseJobPrioritization;
    
    public function getJobWeight() : int
    {
        return $this->user->isUsingProPlan()
            ? 1000
            : 500;
    }
}
```

### Dispatch the Queue

You can use the normal Dispatcher or Queue Facade,... to dispatch the Queue Msgs

### As primary queue

```env
QUEUE_CONNECTION=database-priority
```

And you're ready to roll.

### As secondary queue
Specify the `database-priority` connection when dispatching a queue msg.

```php
// use Dispatcher
SendEmail::dispatch($user, $emailContent)
    ->onConnection('database-priority');

// use Queue Facade
use Illuminate\Support\Facades\Queue;

Queue::connection('database-priority')
    ->push(new SendEmail($user, $emailContent));
```

I get that you guys might don't want to explicitly put the connection name. Alternatively, you can do this:

```php
class SendEmail implements ShouldQueue
{
    // first option
    public $connection = 'database-priority';
    
    public function __construct()
    {
        // second option
        $this->onConnection('database-priority');
    }
}
```

## Run The Queue Worker

Nothing different from the Laravel Documentation 😎. Just need to include the `database-priority` driver.

```bash
php artisan queue:work database-priority

# Extra win, priority on topic
php artisan queue:work database-priority --queue=custom
```

## Testing

Run `composer test` 😆

Available Tests:

- Unit Testing
- Integration Testing against MySQL and `queue:work` command

## Contributors
- Seth Phat

## Contributions & Support the Project

Feel free to submit any PR, please follow PSR-1/PSR-12 coding conventions and unit test is a must.

If this package is helpful, please give it a ⭐️⭐️⭐️. Thank you!

## License
MIT License

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